2 * ucimap - library for mapping uci sections into data structures
3 * Copyright (C) 2008 Felix Fietkau <nbd@openwrt.org>
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License version 2
7 * as published by the Free Software Foundation
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
22 #define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
25 #define BITFIELD_SIZE(_fields) (((_fields) / 8) + 1)
27 #define CLR_BIT(_name, _bit) do { \
28 _name[(_bit) / 8] &= ~(1 << ((_bit) % 8)); \
31 #define SET_BIT(_name, _bit) do { \
32 _name[(_bit) / 8] |= (1 << ((_bit) % 8)); \
35 #define TEST_BIT(_name, _bit) \
36 (_name[(_bit) / 8] & (1 << ((_bit) % 8)))
40 #define __optmap_gen_type(_type, _field) -1
43 #define likely(_expr) !!(_expr)
47 #define unlikely(_expr) !!(_expr)
52 #define __compatible(_type, _field, _newtype) \
53 __builtin_types_compatible_p(typeof(&(((_type *)0)->_field)), _newtype *)
55 #define __list_compatible(_type, _field, __val, __else) \
56 __builtin_choose_expr(__compatible(_type, _field, struct ucimap_list *), __val, __else)
58 #define __int_compatible(_type, _field, __val, __else) \
59 __builtin_choose_expr(__compatible(_type, _field, int), __val, \
60 __builtin_choose_expr(__compatible(_type, _field, unsigned int), __val, \
63 #define __string_compatible(_type, _field, __val, __else) \
64 __builtin_choose_expr(__compatible(_type, _field, char *), __val, \
65 __builtin_choose_expr(__compatible(_type, _field, unsigned char *), __val, \
66 __builtin_choose_expr(__compatible(_type, _field, const char *), __val, \
67 __builtin_choose_expr(__compatible(_type, _field, const unsigned char *), __val, \
70 #define __bool_compatible(_type, _field, __val, __else) \
71 __builtin_choose_expr(__compatible(_type, _field, bool), __val, __else)
74 #define __optmap_gen_type(_type, _field) \
75 __list_compatible(_type, _field, UCIMAP_LIST, \
76 __int_compatible(_type, _field, UCIMAP_INT, \
77 __string_compatible(_type, _field, UCIMAP_STRING, \
78 __bool_compatible(_type, _field, UCIMAP_BOOL, \
82 #define likely(x) __builtin_expect(!!(x), 1)
86 #define unlikely(x) __builtin_expect(!!(x), 0)
91 #define UCIMAP_OPTION(_type, _field) \
92 .type = UCIMAP_CUSTOM, \
94 .offset = offsetof(_type, _field), \
95 .detected_type = __optmap_gen_type(_type, _field), \
99 #define UCIMAP_SECTION(_name, _field) \
100 .alloc_len = sizeof(_name), \
101 .smap_offset = offsetof(_name, _field), \
104 struct uci_sectionmap;
108 struct uci_alloc_custom;
111 struct uci_sectionmap **sections;
112 unsigned int n_sections;
113 struct list_head sdata;
114 struct list_head fixup;
115 struct list_head pending;
118 void *priv; /* user data */
123 UCIMAP_SIMPLE = 0x00,
125 UCIMAP_TYPE = 0xf0, /* type mask */
131 UCIMAP_SECTION = 0x3,
133 UCIMAP_SUBTYPE = 0xf, /* subtype mask */
135 /* automatically create lists from
136 * options with space-separated items */
137 UCIMAP_LIST_AUTO = 0x0100,
138 UCIMAP_FLAGS = 0xff00, /* flags mask */
147 struct ucimap_list *list;
150 struct ucimap_section_data {
151 struct list_head list;
153 struct uci_sectionmap *sm;
154 const char *section_name;
156 /* list of allocations done by ucimap */
157 struct uci_alloc *allocmap;
158 struct uci_alloc_custom *alloc_custom;
159 unsigned int allocmap_len;
160 unsigned int alloc_custom_len;
162 /* map for changed fields */
167 struct uci_sectionmap {
168 /* type string for the uci section */
171 /* length of the struct to map into, filled in by macro */
172 unsigned int alloc_len;
174 /* sectionmap offset, filled in by macro */
175 unsigned int smap_offset;
177 /* return a pointer to the section map data (allocate if necessary) */
178 struct ucimap_section_data *(*alloc)(struct uci_map *map,
179 struct uci_sectionmap *sm, struct uci_section *s);
181 /* give the caller time to initialize the preallocated struct */
182 int (*init)(struct uci_map *map, void *section, struct uci_section *s);
184 /* pass the fully processed struct to the callback after the section end */
185 int (*add)(struct uci_map *map, void *section);
187 /* let the callback clean up its own stuff in the section */
188 int (*free)(struct uci_map *map, void *section);
190 /* list of option mappings for this section */
191 struct uci_optmap *options;
192 unsigned int n_options;
193 unsigned int options_size;
196 const char *type_name;
202 enum ucimap_type type;
203 int (*parse)(void *section, struct uci_optmap *om, union ucimap_data *data, const char *string);
204 int (*format)(void *section, struct uci_optmap *om, union ucimap_data *data, char **string);
205 void (*free)(void *section, struct uci_optmap *om, void *ptr);
215 struct uci_sectionmap *sm;
220 const char *type_name;
226 union ucimap_data item[];
229 extern int ucimap_init(struct uci_map *map);
230 extern void ucimap_cleanup(struct uci_map *map);
231 extern void ucimap_set_changed(struct ucimap_section_data *sd, void *field);
232 extern int ucimap_store_section(struct uci_map *map, struct uci_package *p, struct ucimap_section_data *sd);
233 extern void ucimap_parse(struct uci_map *map, struct uci_package *pkg);
234 extern int ucimap_parse_section(struct uci_map *map, struct uci_sectionmap *sm, struct ucimap_section_data *sd, struct uci_section *s);
235 extern void ucimap_free_section(struct uci_map *map, struct ucimap_section_data *sd);
236 extern int ucimap_resize_list(struct ucimap_section_data *sd, struct ucimap_list **list, int items);
237 extern void ucimap_free_item(struct ucimap_section_data *sd, void *item);